Wire-strap-sealing machine



Feb. 8, 1927. 1,616,911,

I w. N. LURCOTT WIRE STRAP SEALING MAQHINE' Filed Jan. 2 2 Sheets-Sheet 1 iiiiiiiiiiiiin &

INVENTOR. MA /"050M LII/70077 b A TTORNEY v w. N. LURCOTT v WIRE STRAP "YSEALIING MACHINE Filed Jan.10, 1920 2' Sheets-Sheet 2 INVENTOR. Wynne-o A! L umcorr BY m f? ATTORNEY.

Patented Feb. 8, 1921.

1,616,911 UNITED-STATES PATENT OFFICE.

wmrnnn 1w. tumors, or wnnnawxnn, new JERSEY, ASSIGNOR, BY mnsnn Ass .sremmms, 'ro emrnocx, me, on NEW YORK, N. Y., a'conrona'rron or DELA- wean.

'WIBE-STBAP-SEALING MACHINE.

1 Application filed January 10, 1920.* Serial 110450545.

The present invention relates particularly to machines for uniting the ends of wire.

straps used for securing packing cases and like articles, and more particularly for manipulatin the seal disclosed in Letters Patent of t e United States for improvements in wire strap seal and method of forming the same granted to me November 20,

1923, and having the Number 1,474,372, to

mani ulated tool for the pu e mentioned; to ad} F ust the movements 0 the power applying members in opposite or counter-efiective directions; and to provide a tool for performing the functions for which it is desi ed rapidly.

rawmgs.

Figure 1 is a side v ew of a tool constructed and arranged in accordance with the present invention;

Figure 2 is a plan vle'w-of the tool partly in section, the section being taken on the hue 2-2 of Figure 3;

Figure 3 is a side elevation partly in section, the section being taken as on the hne 33 in Figure 2;

Fi re 4 is a vertical cross section-the section eing taken as on the line 44 in Figure 1; and

Figure 5 is an end View of the tool.

Fi re 6 is a side edge view ofthe knot or tie formed by the helix of the wire after the same has been compressed.

As shown in the a plication to which reference has been me e,- the wire strap 9 has at one end an open. spiral 8, which is coiled hackand around the adjacent portion of the said strap, to form theend'loop 1 0" and loops 12, through which the free end 13 of the wire is passed prior to the seal being closed by pressing the said loops 12 on the arallel lapped portions of the strap; To hold one endwhile exerting a pull on the strap the present machine employs a serrated foot 14:, and a tootheddog 15. The dog 15 has a pivot 16, on which it swings so that the toothed end 17- will bite upon to hold the end of the strap 9 adjacent the spiral 8.

- In placing the machine with reference to the strap, it ismoved until the spiral 8 rests in a vise havinga bed 18 and platen 19.. In

this position of the coil 8, the dog 15 is swung on its pivot 16 and the toothed end 17 bites on the strap 9. The free end 13 of the strap is thenguided through the loops 10 and I2 of the spiral 8, and carried back to be inserted in one of the cross grooves 20 openin from the face of the winch head 21.

en the portion of the free end 13 is so g disposed in one of the grooves 20, the winch head 21 is rotated by manipulating the handTe 22. The winch head 21 is rigidly mounted on a shaft 23, which extends through bearings in the machine body 24, and has rigidly mounted at the opposite end a ratchet Wheel 25. The body 24 is shaped to form a boss 26, which forms a bearing for the handle 22, on which the said handle I pivots. The handle 22 is furnished with a pawl 27, the tooth of which engages the teeth in the ratchet wheel 25 whenever the handle is lifted. When the handle 22 is depressed, the pawl 27 rides over the teeth of the wheel 25. k

, When theffree end 13 has been adjusted in engaging relation to the winch head 21, the hand wheel 25, and the winchhead 21 connected therewith. This action of the winch head 21 bends the free end 13 of the strap around the winch head and draws the strap tightly. upon the box.

Durin the strain imparted to the strap the end aving. the spiral 8 is held against movement by thedog 15 and the foot plate 14. To assist in exerting the necessary heavy strain on the strap 9, the operator holds the machine in level sitien by grasping with one hand the hen e 29; of the lever 30, while with the other hand he grasps the hand hold 31, set cat from the SIdE OT the handle 22. l v I As the wheel 25 is turned, a. pawl 32 en gages the wheel 25, to prevent the retrcgree sion thereof during the returns of the handle 22 for renewing the grips oi the ratchet wheel 25.

. By reference to Figures 3, 2-. and 5, it will. be. seen that the free end at the strap is adjacent the outer edge e1} had 13, and in the path of a cutterwhich grips that ortion of the free end 13 adjacent and insi e of e22 is successively lifted to rotate the I thespiral 8 as'the said spiral is closed pressure applied en the platen 19. lhe sev-' ered portion of the tree end 13 is that which between the sides of the platen 19.

'It will be seen that when the'sh'afts 37 have" completed ahalf revolution the pins 36- pass the vertical center between the shafts winch head 21, and 39 and the center of the shafts 37. The preswhich after beingsevered by the cutter 33 sure imposed u on the laten at this time, is readily and quickly removed from the said and .the pnl l o the spring 35, tend now to winch head. a I litt the pms'36. 'lnthis movement the shafts The platen i9 is moved by the lever to ward the bed '18 to flatten or mashthe coil leased, the dogs 43 and permitting the 8 so that the sections thereof displace upwheel 41 to rot-ate freely; The result of this ward and downward the portions of the is that automatically the machine, after havstrap contained within the coil. ing performed its work, raisesithe platen 19,

To this end the platen 19 is mounted in to permit the removalofthe machinefrom a guide frame 34?, which is normally susthe strap without further operation on the pended or lifted away from the bed 18 by part ofthe attendant.

a suspension sprin 35. The platen 19 is depreseedtoward t e-bed 18 by crank pins when using the machine such as described, 36, which are, 'iorrned in shafts 37, being the wire strap may be quickly adjusted and preferably machined thereirom and eccendrawn to the proper tension, preparatory tric thereto. lhe crank pins 36 are ento applying pressure to the seal for locking ga edby links 38. The links 38 are-paired' the same. It will alsobe-eeen that after an o has been wound on the t equal length and engage at their the tension has been obtained, thepressure $137 an diparts connected therewith are. re-

From the foregoin it will be seen that lower ends bearing shafts 39, which extend for locking the seal may be quickly applied roof the seal has been completed, the operating due parts of. the machine are quickly andautomatically opened, ready to remove the ma In their operation the shafts are tated in relatively reverse directions, to the fact that they are operatively con.-

" nected by gearwheels 40 and 41. lBy reason chine from the seal, to be employed in form of this construction the pins 36 move toing anether seal. ward each other when pressure is being ap- It will be understood that various changes plied through the links 38 to the latch 19. may be resorted to inthe form, construction Canting or rocking of the platen uring the and arrangement of the several parts, withmoment of pressure is thereby avoided. out departing from the spirit and scope of The shafts 3'? are rotated by the gear-5140 my invention; hencel do not intend to be and 41. Power is primarily applied to the llmited to the details herein shown and degea'r wheel ll 70 the lever 30. The lever 30 scr bed except as they are included in the 1s forked and ms hearings on one or" the claims. g

Claims o v 1. A machine as characterized com rising a vise; means for holding a looped and of shafts 37. Between-the members oi the fork ivoted a dog 43. The dog'dil, as best seen igure 1 of the drawings, has teethto engage the teeth of the gear wheel 41, and is a wire strap in said visa-means engaging the sides of the fork 42. By means of this same t of the shafts 37, which depresses the platen has been passed through sai lever 30 is 'arrested to depress the handled practioeEthelever 30 is raised and lowered strapa jacent sai pivoted on a, shaft 44;, extending between the opposite end of said strap todraw the irough said looped end within said the vise, andmeans for closing said vise on said "looped end to crimp said opposite end over the-sides of said looped end.

2. A machine for sealing wire straps which construction when the lever 30 is lifted dog 43 runs freely baehoverthe wheell the teeth of said dog engaging the teeth oi said wheel whenever the movement of the end 29 thereof. wound helix. Said helix envelopin the op- By this arrangement a relativelylare PQSIFQ end ef said stra ,said mac ine commovement of the handle% in relation to te prising a wee, means or holding the helix shafts 3'? is obtained, and is multied by between the jaws of said vise, said means emthe number of the movements deseri elix, and means engaging a number of times during h f elix or draw- 19 sulhcient to flatten th es iral Sand clamp ing the same therethrough to tighten said the ends of the strap 9 he d thereon. Dur-- strap upon an object to which said strap is mg-eaehreeession of the lever 30 to obtain being applied. a; new gripion the wheel 41-, the dog 45 en- 3-. A machine for sealing wire strapswhich gages and holds the wheel 41 against return." are provided at one end thereof with an open he pawl 45 is lifted into engage-meant by a wound helix, said helix envelop the opfiaticoil spring which is held wi n a. barrel posite end of said stra said msiii ine comsoeket 45 surrounding the pivot on which rising a vise, means or holding the helix thesald pawl 1s mounted. 7 it tween the jaws of said vise, said means emand automatically, as soon as the looking after the same are provided atone end thereof with an open d. In 'bodyin a grippingldevice for engaging said bodying a gripping device for engaging said strap adjacent said helix, and means engaging.

the opposite end of said strap after the same has been passed through said helix fordrawing the same therethrough to tighten said strap upon an object which said strap is being applied, said means embodying a rotary winch member having a head provided with a snubbing device for holding said free end while the same is drawntaut.

4. A machine for sealing wire straps which are provided at one end thereof with an open wound helix, said helix enveloping the opposite end of said strap, said machine comprising a vise, means for holding said helix between the jaws of said vise, said means embodying a gripping device for engaging said strap at a point adjacent said helix, means engaging the opposite end of said strap after the same haspassed through said helix for drawing the same therethrough to tighten said strap upon an object to which said strap is being applied, said means embodying a rotary Winch member having a head provided with a snubbing device for holding said free end while the same is drawn taut,

and means for closing said vise on said loop after the free end of said straps are tightened.

5. A machine for sealing wire straps which are provided at one end thereofwith an open wound helix, said helix enveloping the opposite end of said strap, said machine comprising a vise, means for holding said helix between the jaws of said vise, said means embodying a gripping member for engaging the wire carrying said helix adjacent said helix, means embodying a rotary winch adapted to engage the free end of said strap after being drawn through said helix, and power means forrotating said winch after engagement with said strap, and means for closing said vise to compress the convolutions of said helix to crimp the portions of said strap encompassed therein.

(i. A machine for sealing wire straps which are provided at one end thereof with an open wound helix, said helix enveloping the opposite end of said strap, said machine comprising a vise, means for holding the helix between the jaws of said vise, said means embodying a gripping device for engaging said strap adjacent said helix, means engaging the opposite end of said strap after the same has been passed through said helix for drawing the same therethrough to tighten said strap upon an object 'to which said strap is being applied, means for closing said vise to compress the convolutions of said helix to crimp the portions of said strap encompassed therein, and means for severing said opposite end of the strap substantially simultaneously with the closing of the vise.

7. A tool for uniting the ends of wire straps, each having at one end thereof an open helix; said helix providing an open passage therethrough for the opposite end of said strap, said tool comprising, means for tensioning said strap and means for crush- Ying said helix while the strap is under tension for uniting the ends thereof.

8. A tool for uniting the ends of wire straps, each having at one end thereof an open helix, said helix providing an open. passage therethrough for the opposite end of said strap, said tool comprising, means for tensioning said strap, means for crushing said helix while the strap is under tension for unitin the ends thereof and means for severin said opposite end of the strap.

9. A tool for uniting the ends of wire straps, each having at one end thereof an open helix, said helix providing an open passage therethrough for the opposite end of said strap,'said toolcomprising, means for gripping one end of the strap, means for pulling on the other erid of the strap for tensioning the strap, and means for crushing said helix while the strap is under tension for unit-ing the ends thereof.

10. A tool for. uniting the ends of wire straps, eachhaving at one end thereof an open hel1x,sa1dhel1x providing an open passage therethrough for the opposite end of said strap, said tool comprising, means for tensioning said strap, 'means for crushing said helixwhile the strapis under tension for uniting the ends thereof, means for severing said opposite end of the strap, and common actuating mechanism for the crushing and severing means.

WINFRED N. LURCOTT. 

